Display panel and preparation method thereof

A display panel and substrate technology, which is applied in the manufacture of semiconductor/solid-state devices, semiconductor devices, electrical components, etc., can solve the problems of high resistance of the second electrode layer, achieve the effects of improving uniformity, ensuring light output rate, and avoiding patterning

Active Publication Date: 2020-03-27
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology

[0008] The purpose of the present invention is to solve the above problems, and to provide a display panel and a manufacturing method thereof. The display panel of the present invention provides an auxiliary electrode layer in the non-light-emitting area, and utilizes the parallel connection of the auxiliary electrode layer and the second electrode layer, which can Solve the problem of excessive resistance of the second electrode layer of the device, and also ensure the light extraction rate

Method used

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  • Display panel and preparation method thereof
  • Display panel and preparation method thereof
  • Display panel and preparation method thereof

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Embodiment Construction

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience ...

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Abstract

The invention discloses a display panel and a preparation method thereof. The display panel comprises a substrate, a first electrode layer, a light-emitting layer, a pixel definition layer, a second electrode layer and an auxiliary electrode layer, wherein the pixel definition layer comprises a retaining wall and an opening area, the pixel definition layer and the light emitting layer are coveredby the second electrode layer, the auxiliary electrode layer is arranged on the second electrode layer, and the orthographic projection of the auxiliary electrode layer on the substrate completely falls into the orthographic projection of the retaining wall on the substrate. According to the display panel, the problem that the resistance of the second electrode layer is too large can be solved, and the light emitting rate of the display panel can be guaranteed. According to the preparation method of the display panel, by adjusting the thickness of the pixel definition layer, the transfer printing can be directly achieved while a patterned transfer printing film layer is formed, and the manufacturing process is simplified.

Description

technical field [0001] The present invention relates to the technical field of display panels, and in particular, to a display panel and a manufacturing method thereof. Background technique [0002] Organic electroluminescence (OLED) display devices mainly include bottom emission type (light is emitted downward relative to the substrate) and top emission type (light is emitted upward relative to the substrate). Compared with the bottom-emitting OLED, the light of the top-emitting OLED directly penetrates from the top of the device without passing through the substrate. The pixel circuit design on the substrate will not affect the light-emitting area of ​​the device, avoiding the competition between the area of ​​TFT and metal circuit and the light-emitting area, which can effectively improve the Panel aperture ratio to prepare high-brightness, high-resolution OLED display panels. At the same time, the top-emitting OLED has a lower operating voltage under the same brightness...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/56H01L27/32H01L21/77
CPCH10K59/122H10K50/822H10K50/824H10K59/1201H10K71/00
Inventor 万之君李金川
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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